Notiosorex crawfordi (Coues).—A non-pregnant female (75184) was obtained on November 29, 1957, at El Fuerte by W. L. Cutter. Comparison of this specimen with topotypes of N. evotis (see below) and with undoubted examples of N. crawfordi proves our specimen to be referable to the latter. We presume that the shrew reported as evotis on geographic grounds from El Carrizo by Hooper (1961:120) also is referable to crawfordi. External measurements of our female are: total length, 77; length of tail, 20 (tip missing); length of hind foot, 11; length of ear from notch, 8; weight in grams, 4. Cranial measurements of this individual are given in [Table 1].
Notiosorex evotis (Coues).—Four topotypes (85533-36), all males, were collected by Lee at Mazatlán. One was caught on December 17, 1960, in a museum special trap set "in low weeds near thorn bush" in a sandy field at the north edge of Mazatlán, less than a mile from the ocean. A few trees and some grasses grew in this area; Mus musculus and Perognathus pernix were taken in the same line of traps. Additional trapping at this locality failed to produce more shrews. The other three specimens were captured alive on February 1 (one) and February 2 (two), 1961, in the wake of a bulldozer that was clearing land adjacent to the place where the first specimen was trapped. The ground cover being cleared away consisted mostly of dry, dense weeds and short, thorny scrub; the latter was sparse in some places and formed dense thickets in others. One individual that was kept alive for a short time in a can ate crickets and roaches readily and ate one spider, but refused isopods. On one occasion it ate six crickets in about three hours. Wet oatmeal and oatmeal mixed with peanut butter both were refused.
Table 1. Cranial Measurements of Two Species of Notiosorex.
| Catalogue number, or number of specimens averaged, and sex | Condylobasal length | Interorbital constriction | Maxillary breadth | Cranial breadth | Palatal length | Length of maxillary tooth-row |
|---|---|---|---|---|---|---|
| Notiosorex crawfordi, Huachuca Mts., Arizona[A] | ||||||
| Average 6 (2♂, 4♀) | 16.01 | 3.72 | 5.08 | 8.32 | 6.59 | 5.93 |
| Minimum | 15.7 | 3.6 | 4.9 | 7.8 | 6.3 | 5.8 |
| Maximum | 16.5 | 3.85 | 5.2 | 8.8 | 7.15 | 6.2 |
| El Fuerte, Sinaloa | ||||||
| 75184 KU, ♀ | 16.5 | 3.7 | 5.0 | 8.4 | 6.9 | 6.1 |
| SW Guadalajara, Jalisco | ||||||
| 33318 KU, ♂ | .. | 3.6 | 4.9 | .. | 7.1 | 5.7 |
| 42583 KU, ? | 15.0+ | 3.5 | 4.6 | .. | 6.6 | 5.4± |
| 42584 KU, ? | .. | 3.6 | 4.9 | .. | 7.1± | 6.1± |
| 2 mi. E La Palma, Michoacán | ||||||
| 42586 KU, ? | .. | 3.8 | 4.9 | .. | 6.9 | .. |
| 42587 KU, ? | .. | 3.8 | 4.8 | .. | 6.9 | 6.0 |
| 42588 KU, ? | .. | .. | 4.9 | .. | 6.9 | 6.2 |
| Notiosorex evotis, Mazatlán, Sinaloa | ||||||
| Average 4 (♂) | 17.68 | 4.05 | 5.37 | 8.68 | 7.60 | 6.58 |
| Minimum | 17.4 | 4.0 | 5.3 | 8.5 | 7.5 | 6.5 |
| Maximum | 17.9 | 4.1 | 5.4 | 8.8 | 7.7 | 6.7 |
[A] After Hoffmeister and Goodpaster, 1954:51.